CS211275B1 - Method of dying and printing the textile materials containing cellulose fibres by the anionte dyes - Google Patents

Description

The invention relates to the use of compounds of the general formula

CH 2 - C "(CH 3 IN 2 O 3 ₎

X 'where R. is hydrogen or methyl

R 8 is hydrogen, alkyl or hydroxy alkyl having a carbon number of 1 to 3

R @ 1 is alkyl or hydroxyalkyl of 1 to 3 carbons, aryl of 1 to 10 carbon atoms or alkylaryl of 6 to 9 carbons

R 4 is alkyl or hydroxyalkyl having a carbon number of 1 to 3; n is 0, 1, 2 or 3 for fixing anionic dyes to cellulosic fibrous materials.

The compounds of the invention react with the hydroxyl groups of cellulose. The quaternary ammonium group is capable of binding anionic dyes. The reaction between the compounds according to the invention and the cellulose can be carried out before dyeing or printing or in the presence of a dye.

The use of these compounds increases the use of anionic dyes, improves their wet fastness, and simplifies the dyeing process, particularly for blends of cellulosic and synthetic fibers.

The invention relates to the use of the formulations of the general formula ^R2 '+

CH ₂ == C- (CH) _n -N-R 3 X " ^R 4 where R 1 is hydrogen or methyl

R ₂ is hydrogen, alkyl or hydroxyalkyl having a carbon number from 1 to 3

R 1 is alkyl or hydroxyalkyl of 1 to 3 carbons, aryl of 6 to 10 carbons, or alkylaryl of 6 to 9 carbons

R 1 is alkyl or hydroxyalkyl having a carbon number of 1 to 3; n is an integer of 0,1,2 or 3 for fixing anionic dyes to cellulosic fibrous materials.

The use of ammonium compounds capable of reacting with cellulose to fix anionic dyes has been widespread in recent times.

N-2,3-epoxypropyl-N, N, N-trialkylammonium compounds were initially used for this purpose. N, N, N-trialkylammonium salts of hydrohalic acids. All these substances react in an alkaline environment with cellulose by their reactive group to form cellulose ether *

The quaternary ammonium group of this cellulose ether is capable of ionically binding anionic dyes.

The practical consequence of eterification with these preparations is an improved dyeability, manifested by a higher uptake of dyes and an increase in their stability. For the use of these substances in the dyeing of cellulosic fibers, the term cationization is used, and cationic preparations are used to designate compounds.

According to the invention, the quaternary and tertiary ammonium salts of the strong acids according to formula 1 can also be used to mediate the binding of the cellulosic substrate and the anionic dye with the same effect.

Examples of compounds of the above formula are:

N-allyl-N, N, N-trimethylammonium chloride *

N-allyl-N, N-dimethyl-N-ethyl ammonium bromide,

N-allyl-N, N-dimethyl-N-benzylammonium iodide,

N-butenyl-N, N-dimethyl-N-phenylammonium metosulfate,

N-propylene-N, N, N-triethylammonium chloride.

Compared to the cationic formulations used hitherto, the compounds according to the invention have the advantage that their preparation does not have to be based on harmful and dangerous substances, as is the case with the previously used cationic formulations, where the basic starting material is epichlorohydrin.

As with known types of cationic formulations, the formulation may react with cellulose prior to dyeing or printing, simultaneously with the dye or after dyeing.

Of course, the first two methods are of the greatest importance, as they increase the stability and increase the use of dyes.

The following examples illustrate the practical meaning of the invention:

Example 1

Cotton fabric impregnates the fularda with a bathing bath

¹ gl of N-allyl-NN-dimethyl-N-du benzylmoniumchúoo

gl ^{1 h} exarneeylentetrin

After drying, the fabric is heat treated at 205 ° C for 60 s. Then it is dyed on a jug in a bath containing% Direct Green No. C.I. 28 at 80 ° C for 40 minutes.

This is followed by a short water wash at 50 ° C. The resulting saturated green coloration has very good sea fastness.

Example 2

The cotton / viscose fiber web is printed with a paste containing 1. kg:

f g Spot Blue No. CI. 67 g of N- (2-ethyl, allyl) -N, N-diethyl-NdO) ylethylammonium chloride g of sodium alginate g

Design by film printing technique with flat stencils. After drying, the fabric is heat treated at 205 ° C for 90 s.

No water washing at 60 ° C on a wide-ranging machine and drying followed. The resulting printing has high stability and very good dye utilization.

Example ^ d 3

The mercerized cotton fabric is soaked in fulard with a bath:

3 ° g -1'-ethyl-NN-dimethyl-N-benzimidazole ^g.

After packing, it is left to stand for 12 hours at a milliot temperature. Then they dye on the jig.

1.5% Reactive Brown No. C.I. 2 at 80 ° C for 45 minutes. After washing with water at 90 ° C (15 minutes), the fabric is washed briefly with warm (40 ° C) and cold water. The resulting brown coloration has high wet fastnesses and the dye is fully utilized.

Claims (1)

Method for dyeing and printing anionic dye-containing textile fibers containing cellulosic fibers characterized in that the dyed fibers are treated simultaneously with the dye or before dyeing with the compounds of the general formula Γ \ f * CH2 = C- (CH _{2) n} -N-R 3 ^R 4 wherein R is hydrogen or methyl R 8 is hydrogen, alkyl or hydroxyalkyl having a carbon number of 1 to 3 R 1 is alkyl or hydroxyalkyl of 1 to 3 carbons, aryl of 6 to 10 carbons, or alkylaryl of 6 to 9 carbons R 6 is alkyl or hydroxyalkyl having a carbon number of 1 to 3; n is an integer of 0, 12 or 3; Severography, n. P., · Plant 7, Most